Rangeland Ecology. Hierarchy of Ecological Levels Figure from: On-line biology class.
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Transcript of Rangeland Ecology. Hierarchy of Ecological Levels Figure from: On-line biology class.
![Page 1: Rangeland Ecology. Hierarchy of Ecological Levels Figure from: On-line biology class.](https://reader036.fdocuments.net/reader036/viewer/2022062714/56649d2d5503460f94a0455b/html5/thumbnails/1.jpg)
Rangeland Ecology
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Hierarchy of Ecological Levels
Figure from: www.goldiesroom.orgOn-line biology class
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Basic Energy Flow
Producers Plants
DecomposersFungi & Bacteria
ConsumersHerbivores, Carnivores &
Omnivores
HEAT
Inorganic Nutrients H2O, O2 CO2, N, Minerals
HEAT
HEAT
HEAT
HEAT
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Inorganic Nutrients H2O, O2 CO2, N, Minerals
Trophic Levels
Autotrophs Producers
HeterotrophsDecomposers
HeterotrophsConsumers
HEAT
This pattern of energy flow among different organisms is the TROPHIC STRUCTURE of an ecosystem.
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Fate of Solar Energy
Fuels Photosynthesis Warms Earth Powers Water Cycle
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ProducersConvert Solar Energy into Chemical Energy through
Photosynthesis
Producers = Autotrophs = Plants & Algae
6CO2 + 6H2O + sunlight & chlorophyll C6H12O6 + 6O2
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Producers Convert Solar Energy into Chemical Energy
through Photosynthesis Energy is stored in glucose bonds
Glucose is converted and stored as simple sugars and starch in plants
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Consumers Eat other living plants, animals or microbes Get energy from preformed organic molecules
heterotrophs
Herbivore - plant eaters
Carnivore - meat eaters
Omnivore - mixed plant/animal diet
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Consumers Primary Consumers
Eat Plants Herbivores
Secondary Consumers Eat Primary Consumers Carnivores
Tertiary Consumers Eat Secondary Consumer Carnivores
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Detrivores Organisms that eat detritus Detritus Dead plants, animals, & microbes
& fecal wastes of animals Get energy from preformed organic
molecules Decomposers Live on detritus in such a way
that it decays Subgroup of detrivores
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Food chains & webs Food chain pathways of feeding
relationships Producer-consumer relationships Parasite-host relationships
Food web Complex pattern of interconnected food chains
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A food chain
Nutrie
nts
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A food webN
utri
ents
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Trophic levelsN
utri
ents
1st Trophic LevelProducers
2nd Trophic Level Primary Consumers
3rd Trophic Level Secondary Consumers
4th Trophic Level Tertiary Consumers